Q:  As of what date was ETI repealed?

A:  The ETI legislation (Sec. 114) was repealed, effective December 31, 2004,by the 2004 Jobs Act. The legislation, however, contains transition rules that permit limited ETI benefits in 2005 (80%) and 2006 (60%). There are also ETI transition rules for long-term contracts, like aircraft leases.
The Jobs Act repealed the ETI legislation and implemented replacement legislation in the form of the domestic production deduction under Sec. 199,effective January 1, 2005. The Sec. 199 deduction benefits are phased in over a transition period between 2005 and 2010, as follows:

2005 - 2006 3% x Qualified Production Activity Income (QPAI)

2007 - 2009 6% x Qualified Production Activity Income (QPAI)

After 2010 9% x Qualified Production Activity Income (QPAI)